Ref. 7505-1 Chronometre Etanche, Noir Email

Ref. 7505-1

Case diameter: 35 mm; Manufacturer spec
Lug-to-lug: 41.5 mm; Manufacturer spec
Thickness: 9.6 mm; Manufacturer spec
Lug width: 20 mm; Manufacturer spec

Retail price $1,290 (US, Oct 2026)

Your wristIdeal fit

Wrist flat: 55.1 mmLug-to-lug: 41.5 mm

How the Ref. 7505-1 Chronometre Etanche, Noir Email wears

Its lugs add 6.5 mm to the 35 mm case, close to the 7 mm typical across the almanac, so its diameter is a fair guide to how it wears.

On our fit model it sits best on wrists from 6" to 7" (15.2–17.8 cm); below 6" the lugs start to reach the edge of the wrist.

At 9.6 mm thick it is slimmer than 91% of the 35 other field watches we've measured, so it slides under a cuff more easily than most.

Its 20 mm lug width is one of the most common strap sizes; 156 other watches here share it, so aftermarket straps are easy to find.

Will the Ref. 7505-1 Chronometre Etanche, Noir Email fit your wrist?

With a 41.5 mm lug-to-lug, here is how it wears across common wrist sizes. We estimate the flat top of each wrist from its circumference; measure yours for a closer answer in the fit finder.

Wrist	Flat width (est.)	Fit
6"	47.2 mm	Ideal fit
6.5"	51.2 mm	Ideal fit
7"	55.1 mm	Ideal fit
7.5"	59.1 mm	Wears small
8"	63 mm	Wears small

Specifications

Reference: 7505-1
Collection: 7505
Status: In production
Case material: 316L stainless steel
Crystal: double-domed sapphire, interior AR
Water resistance: 200 m
Bezel: fixed brushed steel
Dial: black enamel
Strap / bracelet: Bonklip bracelet with Safe-lock clasp
Style: Field, Everyday

Movement

Caliber: Soprod M100
Type: automatic
Power reserve: 42 hours
Frequency: 28,800 vph (4 Hz)
Jewels: 25
Accuracy: COSC

Takes 20 mm straps. See other 20 mm watches and straps.

Watches that wear the same size

Other watches within 1.5 mm of its lug-to-lug.

Same 20 mm lug width

All 20 mm watches

These take the same straps as the Ref. 7505-1 Chronometre Etanche, Noir Email.